GB17675-2021
Steering system of motor vehicles—Basic requirements
汽车转向系 基本要求
GB 17675-2021 is a current mandatory Chinese national standard for Steering system of motor vehicles—Basic requirements. It appears in the Electronics compliance cluster with a product safety focus and has an implementation date of Jan 1, 2022.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to M category, N category vehicles, and O category trailers as defined in GB/T 15089. It specifies the basic requirements and testing methods for motor vehicle steering systems. This standard is mandatory for all relevant vehicle manufacturers entering the Chinese market. It does not apply to pneumatic steering systems or vehicles equipped with autonomous steering systems.
Technical requirements
The standard outlines comprehensive technical requirements for both motor vehicles and trailers. For motor vehicles, it specifies limits on steering control force, steering time, and turning radius under normal and failure conditions. It mandates that vehicles maintain straight-line driving performance without abnormal vibrations and requires compliance with electromagnetic compatibility (EMC) standards like GB 34660. For trailers, it defines requirements for steady-state turning circles, outer swing value when leaving a turning circle, and specific rules for hydraulic and electric steering transmissions. Manufacturers must ensure that steering systems meet functional safety requirements as detailed in the normative annexes, including provisions for Auxiliary Steering Equipment (ASE) and full-power steering systems.
Testing methods
The standard details specific testing procedures to verify compliance. Key tests include measuring steering control force when entering a turn, evaluating understeer characteristics, and checking for abnormal vibrations when departing a 50m radius turning circle. For vehicle combinations (trailers), tests assess straight-line driving stability, steady-state turning circle differences at varying speeds, and the outer swing value. All performance tests must be conducted under maximum design load and simulated electrical load conditions to ensure real-world reliability. Functional safety verification involves Hardware-in-the-Loop (HIL) testing and real-vehicle road tests as per GB/T 34590.
FAQs
What products are regulated under GB 17675-2021?
It regulates the steering systems of M category and N category motor vehicles, as well as O category trailers.
Are there any updates from the previous version of GB 17675?
Yes, GB 17675-2021 replaces the 1999 version, introducing new requirements for functional safety, electromagnetic compatibility, trailer steering systems, and Auxiliary Steering Equipment (ASE).
Does GB 17675-2021 reference international standards?
Yes, the technical content references the UN Regulation No. 79 (Rev.4) and incorporates functional safety guidelines from GB/T 34590 (ISO 26262 equivalent).
The summary above provides a high-level overview of GB 17675-2021. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 17675-2021 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Safety
- CCS
- T 23
- ICS
- 43.040.50
- Competent department
- Ministry of Industry and Information Technology
- Technical committee
- Ministry of Industry and Information Technology